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Home ‣ Electronics ‣ Ohm's Law Comments
  • Question

  • Ohm's law is a relationship between


  • Options
  • A. voltage, current, and time
  • B. power, current, and resistance
  • C. resistance, time, and current
  • D. voltage, current, and resistance

  • Correct Answer
  • voltage, current, and resistance 

    • Ohm's Law problems

    Search Results

    • 1. A damaged resistor

    • Options
    • A. may appear burned
    • B. may have an increased resistance value
    • C. may be checked with an ohmmeter
    • D. All of the above
      • Discuss
    • 2. 

      What is the power in the given circuit?


    • Options
    • A. 3.6 W
    • B. 35 W
    • C. 175 W
    • D. 245 W
      • Discuss
    • 3. 

      If the voltage in the given circuit was cut in half, what would the current equal?


    • Options
    • A. 10 mA
    • B. 30 mA
    • C. 60 mA
    • D. 90 mA
      • Discuss
    • 4. 

      What is the power in the given circuit?


    • Options
    • A. 3.92 kW
    • B. 280 W
    • C. 28.6 W
    • D. 9.8 W
      • Discuss
    • 5. Power supplies are regulated to prevent the output voltage from changing due to changes in the

    • Options
    • A. line voltage
    • B. supply load
    • C. frequency
    • D. both line voltage and supply load
      • Discuss
    • 6. Ohm's law describes the mathematical relationship between

    • Options
    • A. ohms, kilohms, and megohms
    • B. resistor size and resistor value
    • C. resistance, voltage, and current
    • D. none of the above
      • Discuss
    • 7. If doubling the voltage across a resistor doubles the current through the resistor then

    • Options
    • A. the resistor value decreased
    • B. the resistor value did not change
    • C. the resistor value increased
    • D. it is impossible to determine the change in the resistor value
      • Discuss
    • 8. The rate at which work is performed is called

    • Options
    • A. current
    • B. energy
    • C. power
    • D. voltage
      • Discuss
    • 9. Power supplies differ from batteries in that

    • Options
    • A. power supply output voltages are ac and not dc
    • B. power supply voltages are not stable
    • C. power supplies are low-current devices
    • D. None of the above
      • Discuss
    • 10. If voltage across a resistance doubles

    • Options
    • A. the current is halved
    • B. the resistance doubles
    • C. the current is unchanged
    • D. none of the above
      • Discuss

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